CN109611098A - A kind of shaft of vertical well quick freezing method under the conditions of deep layer runoff water is larger - Google Patents
A kind of shaft of vertical well quick freezing method under the conditions of deep layer runoff water is larger Download PDFInfo
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- CN109611098A CN109611098A CN201910047215.1A CN201910047215A CN109611098A CN 109611098 A CN109611098 A CN 109611098A CN 201910047215 A CN201910047215 A CN 201910047215A CN 109611098 A CN109611098 A CN 109611098A
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- shaft
- runoff water
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- vertical well
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000008014 freezing Effects 0.000 title claims abstract description 27
- 238000007710 freezing Methods 0.000 title claims abstract description 27
- 238000007569 slipcasting Methods 0.000 claims abstract description 22
- 238000005553 drilling Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 10
- 238000002360 preparation method Methods 0.000 claims abstract description 8
- 239000004744 fabric Substances 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims description 18
- 239000004568 cement Substances 0.000 claims description 17
- 235000019353 potassium silicate Nutrition 0.000 claims description 11
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 11
- 238000012937 correction Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 244000269722 Thea sinensis Species 0.000 claims description 7
- 235000009569 green tea Nutrition 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000004575 stone Substances 0.000 claims description 7
- 239000011398 Portland cement Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000011440 grout Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims 1
- 235000019698 starch Nutrition 0.000 claims 1
- 238000005057 refrigeration Methods 0.000 abstract description 4
- 239000003657 drainage water Substances 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract 1
- 238000013461 design Methods 0.000 description 4
- 239000003673 groundwater Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
- E21D1/10—Preparation of the ground
- E21D1/12—Preparation of the ground by freezing
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of deep layer runoff water it is larger under the conditions of shaft of vertical well quick freezing method, its feature be include the following steps: 1), deep layer runoff water detection；2), cloth hole and drilling；3), casing is arranged；4), casing is suppressed；5), injecting paste material preparation and slip casting；6), final grouting pressure.Shaft of vertical well can be effectively solved in freezing process because loss of refrigeration capacity caused by frozen crust position interflow subsurface drainage water flow is big, flow velocity is fast etc. is serious using the present invention, apse rate is slow, hydrology pipe test tube water level does not rise slowly, there is the problem of frost wall opens " window " phenomenon, realize the friendship Lap Time degree for accelerating runoff water layer position frost wall, reduce pure freeze-off time, it is ensured that safety pick is built.
Description
Technical field
The invention belongs to mine water management fields, are related to a kind of frozen construction technique, especially a kind of deep layer runoff water compared with
Shaft of vertical well quick freezing method under the conditions of big.
Background technique
Shaft of vertical well is commonly encountered that the frozen crust position rate of discharge of groundwater is big, flow velocity is fast or hydrogeologic data in freezing process
Situations such as deficient, leads to design defect, and loss of refrigeration capacity is serious, and apse rate is slow, hydrological observation pipe water level slowly not on
It rises, frost wall occurs and open " window " phenomenon.Traditional administering method is freezed using low temperature, big flow, not only long in time limit, energy
Source consumption is big, and frost wall is also extremely difficult to design thickness, leaves hidden danger to follow-up work.
Summary of the invention
For the deficiency in background technique, the present invention provide a kind of deep layer runoff water it is larger under the conditions of shaft of vertical well it is quick-frozen fastly
Knot method, using the present invention can effectively solve shaft of vertical well in freezing process because frozen crust position interflow subsurface drainage water flow is big,
Equal caused loss of refrigeration capacity is serious fastly for flow velocity, and apse rate is slow, and hydrology pipe test tube water level does not rise slowly, freezes
Wall is opened the problem of " window " phenomenon, is realized the friendship Lap Time degree for accelerating runoff water layer position frost wall, is reduced pure freeze-off time, it is ensured that peace
Full pick is built.
The technical solution that the present invention solves technical problem is as follows:
Shaft of vertical well quick freezing method under the conditions of a kind of deep layer runoff water of the present invention is larger, its feature be, including such as
Lower step:
1), deep layer runoff water detects: verifying the buried depth for influencing the water of shaft of vertical well closure of freezing wall, runoff water orientation, stream
Amount and flow velocity；
2), cloth hole and drilling: in deep layer runoff water upstream away from one gang drill hole location of arrangement at the position frost wall 4.5m~5.5m
It sets and is drilled using drilling device, deviational survey and correction are carried out after drilling；
3), casing is arranged: lower seamless steel pipe as grouting filling pipe and passes through the ratio of mud using grouting equipment in drilling
The filling with pressure from the bottom to top of the cement single slurry of 1:1 carries out slip casting and manages admittedly；
4), casing is suppressed: after cement list grout cures, being carried out cleaning bottom of hole to grouting filling pipe and is suppressed test；
5), injecting paste material preparation and slip casting: after the completion of suppressing test, the preparation of injecting paste material is carried out, injecting paste material is double
Slurry, using P.O42.5 ordinary portland cement and the waterglass of concentration 39-40Be ', modulus 3.1-3.4, cement slurry and water
The volume ratio of glass is 1:0.8, and aggregate is green tea produced in Anhui Province stone；By cement, waterglass and green tea produced in Anhui Province stone, example mixes and leads to by volume
It crosses grouting equipment and carries out slip casting；
6), final grouting pressure: after the completion of slip casting, termination pressure 30min is kept.
As the further improvement of technical solution, when the step 2) central holing, each fan-shaped arrangement of bore position, spacing
For 2.5m.
As the further improvement of technical solution, the open pore size ￠ 190mm respectively to drill in the step 2), hole scattering
Rate :≤2.5 ‰.
As the further improvement of technical solution, the depth respectively to drill in the step 2) is more than runoff water level layer position 6m.
0~30m sections are respectively drilled as the further improvement of technical solution, in the step 2) using Inclination Measurement by Light, 30m with
It is lower to use gyroscopic survey.
As the further improvement of technical solution, orientation correction is made using helicoid hydraulic motor when correction in the step 2), it is fixed
To 1.5 degree of apex angle.
As the further improvement of technical solution, seamless steel pipe in the step 3) is the seamless steel of ￠ 140mm × 6mm
Pipe.
As the further improvement of technical solution, carry out suppressing test by 8~10MPa pressure in the step 4).
As the further improvement of technical solution, slip casting is carried out with 1~1.5MPa in the step 5).
As the further improvement of technical solution, slip casting termination pressure is 10~12MPa in the step 6).
Compared with current existing technology, shaft of vertical well quick freezing side under the conditions of a kind of deep layer runoff water of the present invention is larger
Method, method is simple, unique, easy to operate, at low cost, convenient, fast, efficient and safe, and it is small to be suitable for groundwater flow amount
In 8m3/ h, flow velocity are less than the stratum 25m/d；The present invention is by changing runoff aquaporin, so that underground diameter in ground punching slip casting
Flowing water streams, and slows down the flow velocity of water, and dispersing water flow pressure reduces impact of the water flow to frost wall " window ".
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and specific embodiments:
Fig. 1 is the arrangement schematic diagram of grouting filling drilling in the present invention；
Fig. 2 is grouting filling slurries diffusion zone floor map in the present invention；
Fig. 3 is that the present invention implements the -50m layers of position apse rate curve graph in front and back；
In figure: 1- pit shaft；The anti-wall caving hole 2-；The main freezing hole of 3-；4- drilling；5- grouting filling body.
Specific embodiment
Embodiment 1:
It is illustrated by taking certain mine fill shaft freezing engineering as an example, as depicted in figs. 1 and 2, pit shaft 1 successively has anti-outward
Wall caving hole 2 and main freezing hole 3, the 1 periphery -50m gravel of pit shaft layer by layer the interflow subsurface drainage water of position direction be the southeast to due to this
The layer position rate of discharge of groundwater is big, flow velocity is fast, and loss of refrigeration capacity is serious, and apse rate is slow, causes hydrological observation pipe water level slow
Do not rise, frost wall occurs and open " window " phenomenon, the downward gradient of daily temperature is at 0.1 DEG C to 0.14 DEG C or so, seriously
Affect the duration, thus a kind of deep layer runoff water of the application present invention it is larger under the conditions of shaft of vertical well quick freezing method, this method
Include the following steps:
1), deep layer runoff water detect: by main freezing hole 3 verify influence shaft of vertical well closure of freezing wall water buried depth,
Runoff water orientation, flow and flow velocity；
2) it, cloth hole and drilling: away from 5 bore positions 4 of arrangement at the position frost wall 5m and is utilized in deep layer runoff water upstream
Drilling device drills, the open pore size ￠ 190mm respectively to drill, Hole deviation :≤2.5 ‰, depth is more than runoff water level
Layer position 6m, carries out deviational survey and correction after drilling；In order to further enhance effect, when this step central holing, each bore position can be in
Sector arrangement, spacing 2.5m；In this step, when drilling, using TSJ-2000E type water source drilling machine, 89 drilling rod of vertical shaft → Φ →
159 drill collars of Φ → 146 helicoid hydraulic motors of Φ → Φ, 190 drill bit；In this step, when each drilling carries out deviational survey, 0~30m sections use JF1
Type cultellation instrument carries out deviational survey with light；30m selects JDT-VA type gyrolevel deviational survey with lower section, when correction, selects 5LZ146
× 7.0BH type helicoid hydraulic motor does orientation correction as correcting device, orients 1.5 degree of apex angle；
3), casing is arranged: lower specification is ￠ 140mm × 6mm seamless steel pipe as grouting filling in each drilling being drilled
It manages and slip casting is carried out by the cement single slurry filling with pressure from the bottom to top of ratio of mud 1:1 using XPB-90E grouting pump and manage admittedly, it should
The cement single slurry of ratio of mud 1:1 adds 750kg water to be prepared by every cubic metre of slurries using 750kg cement；
4), casing is suppressed: after cement list grout cures, being carried out cleaning bottom of hole to grouting filling pipe and is beaten with 8~10MPa pressure
Pressure test, prevents from occurring returning phenomenon on slurries since grouting pressure is excessive during slip casting；
5), injecting paste material preparation and slip casting: after the completion of suppressing test, the preparation of injecting paste material is carried out, injecting paste material is double
Slurry, using P.O42.5 ordinary portland cement and the waterglass of concentration 39-40Be ', modulus 3.1-3.4, cement slurry and water
The volume ratio of glass is 1:0.8, and by every cubic metre, using 417kg water, 417kg cement and the preparation of 600kg waterglass, (waterglass is close
Degree: 1350kg/m3, P.O42.5 ordinary portland cement density is 3000kg/m3, and the density of water takes 1000kg/m, every 1m3Biliquid
It is 0.8/1.8*1350=600kg, every 1m that slurry, which needs waterglass quality,3Dual slurry needs cement quality are as follows: 1/1.8*750=
417kg, dual slurry match ratio (mass ratio) are as follows: water: cement: waterglass=417:417:600, i.e. 1:1:1.44), aggregate is
Green tea produced in Anhui Province stone, the green tea produced in Anhui Province stone are the rubble of 5-8mm partial size；By cement, waterglass and green tea produced in Anhui Province stone, example is mixed simultaneously by volume
Slurries are sent by each drilling with the pressure of 1~1.5MPa by grouting equipment and carry out slip casting, the injecting paste material initial set of this proportion
Time is 120s, is analyzed according to country rock, it is contemplated that the dilation angle of slurries is 2.5m, meets engine request；
6), final grouting pressure: after the completion of slip casting, slip casting termination pressure is 10~12MPa, keeps termination pressure 30min.
As shown in table 1, Fig. 1 and Fig. 3, the engineering of this implementation, which takes ground punching slip casting and forms one of slip casting, fills
Body 5 is filled out, effective dispersing water flow pressure slows down impact, and effect is obvious, and daily falling temperature gradient freezes at 0.9 DEG C to 1.1 DEG C or so
Knot wall " window " is shut quickly, and the hydrology observation tube hydrology rises rapidly, and frost wall hands over circle quickly, and Frozen wall thickness also quickly reaches
The design requirement of 1.6m.
1 present invention of table implements the position apse rate comparison of -50m layers of front and back
In this implementation, the cloth hole in step 2) is to solve the key point of technical problem, relative in traditional administering method
The low temperature of use, big flow are freezed, long in time limit, and energy consumption is big, and frost wall is also extremely difficult to design thickness, and of the invention
Method is relatively easy, operates also extremely convenient while at low cost, short time limit, and efficiently, safety is worth in all kinds of mines or phase
It is promoted the use of like field, there is good economic benefit and social benefit.
The foregoing is merely a prefered embodiment of the invention, but scope of protection of the present invention is not limited thereto, any to be familiar with sheet
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those skilled in the art, should all cover
Within protection scope of the present invention.Therefore, the scope of protection of the present invention shall be subject to the scope of protection defined by the claims.
Claims (10)
1. a kind of shaft of vertical well quick freezing method under the conditions of deep layer runoff water is larger, characterized in that include the following steps:
1), deep layer runoff water detects: verify the buried depth of water for influencing shaft of vertical well closure of freezing wall, runoff water orientation, flow with
And flow velocity；
2), cloth hole and drilling: deep layer runoff water upstream away from the position frost wall 4.5m~5.5m arrange a gang drill hole site simultaneously
It is drilled using drilling device, deviational survey and correction is carried out after drilling；
3), casing is arranged: lower seamless steel pipe passes through ratio of mud 1:1's as grouting filling pipe and using grouting equipment in drilling
The filling with pressure from the bottom to top of cement single slurry carries out slip casting and manages admittedly；
4), casing is suppressed: after cement list grout cures, being carried out cleaning bottom of hole to grouting filling pipe and is suppressed test；
5), injecting paste material preparation and slip casting: after the completion of suppressing test, carrying out the preparation of injecting paste material, and injecting paste material is dual slurry,
Using P.O42.5 ordinary portland cement and the waterglass of concentration 39-40Be ', modulus 3.1-3.4, cement slurry and waterglass
Volume ratio be 1:0.8, aggregate be green tea produced in Anhui Province stone；By cement, waterglass and green tea produced in Anhui Province stone, example mixes merga pass note by volume
It starches equipment and carries out slip casting；
6), final grouting pressure: after the completion of slip casting, termination pressure 30min is kept.
Shaft of vertical well quick freezing method under the conditions of 2. a kind of deep layer runoff water according to claim 1 is larger, feature
It is, when the step 2) central holing, each fan-shaped arrangement of bore position, spacing 2.5m.
Shaft of vertical well quick freezing method under the conditions of 3. a kind of deep layer runoff water according to claim 1 is larger, feature
It is the open pore size ￠ 190mm respectively to drill in the step 2), Hole deviation :≤2.5 ‰.
Shaft of vertical well quick freezing method under the conditions of 4. a kind of deep layer runoff water according to claim 1 is larger, feature
It is that the depth respectively to drill in the step 2) is more than runoff water level layer position 6m.
Shaft of vertical well quick freezing method under the conditions of 5. a kind of deep layer runoff water according to claim 1 is larger, feature
It is that 0~30m sections are respectively drilled in the step 2) using Inclination Measurement by Light, 30m or less uses gyroscopic survey.
Shaft of vertical well quick freezing method under the conditions of 6. a kind of deep layer runoff water according to claim 1 is larger, feature
It is that orientation correction is made using helicoid hydraulic motor when correction in the step 2), orients 1.5 degree of apex angle.
Shaft of vertical well quick freezing method under the conditions of 7. a kind of deep layer runoff water according to claim 1 is larger, feature
It is that the seamless steel pipe in the step 3) is the seamless steel pipe of ￠ 140mm × 6mm.
Shaft of vertical well quick freezing method under the conditions of 8. a kind of deep layer runoff water according to claim 1 is larger, feature
It is to carry out suppressing test by 8~10MPa pressure in the step 4).
Shaft of vertical well quick freezing method under the conditions of 9. a kind of deep layer runoff water according to claim 1 is larger, feature
It is that slip casting is carried out with 1~1.5MPa in the step 5).
Shaft of vertical well quick freezing method under the conditions of 10. a kind of deep layer runoff water according to claim 1 is larger, feature
It is that slip casting termination pressure is 10~12MPa in the step 6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910047215.1A CN109611098A (en) | 2019-01-18 | 2019-01-18 | A kind of shaft of vertical well quick freezing method under the conditions of deep layer runoff water is larger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910047215.1A CN109611098A (en) | 2019-01-18 | 2019-01-18 | A kind of shaft of vertical well quick freezing method under the conditions of deep layer runoff water is larger |
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| CN109611098A true CN109611098A (en) | 2019-04-12 |
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| CN201910047215.1A Pending CN109611098A (en) | 2019-01-18 | 2019-01-18 | A kind of shaft of vertical well quick freezing method under the conditions of deep layer runoff water is larger |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130316A (en) * | 2019-05-13 | 2019-08-16 | 南京林业大学 | The method of thaw collapse after service channel bottom pre-pouring grout system and control freezing construction |
| CN110792471A (en) * | 2019-10-22 | 2020-02-14 | 中南大学 | Sublevel open stoping subsequent filling mining method for artificially freezing filling body |
| CN111734416A (en) * | 2020-07-10 | 2020-10-02 | 中煤特殊凿井有限责任公司 | Construction method for deep water-rich rock shaft by common freezing method |
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|---|---|---|---|---|
| CN110130316A (en) * | 2019-05-13 | 2019-08-16 | 南京林业大学 | The method of thaw collapse after service channel bottom pre-pouring grout system and control freezing construction |
| CN110792471A (en) * | 2019-10-22 | 2020-02-14 | 中南大学 | Sublevel open stoping subsequent filling mining method for artificially freezing filling body |
| CN110792471B (en) * | 2019-10-22 | 2021-05-28 | 中南大学 | Sublevel open stoping subsequent filling mining method for artificially freezing filling body |
| CN111734416A (en) * | 2020-07-10 | 2020-10-02 | 中煤特殊凿井有限责任公司 | Construction method for deep water-rich rock shaft by common freezing method |
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